Linux server consolidation shortcut

From ZDNet: "I've been saving one of those opinions for a rainy day and, based on news that Hewlett Packard will be integrating VMWare's ESX server into its
ProLiant line of servers, that day is today. The news story is barely a paragraph long. But, in the spirit of not judging a book by its cover, it
shines the spotlight on a much larger question that now deserves an answer; how to put an end to server sprawl and lower your costs through server
consolidation."